Washington (CNN) – A possible move by Obama administration to single-handedly act on immigration reform before November's midterm elections could have major political consequences.

The White House could by the end of the summer use executive action to grant work permits to possibly millions of undocumented immigrants, multiple sources confirm to CNN. Such a move would legally allow such undocumented immigrants to stay in the U.S.

Washington (CNN) - The current crisis on the nation's southern border appears to be fueling a notable shift in American attitudes toward immigration policy with border security growing in importance, according to a new national survey.

A CNN/ORC International poll released on Thursday also indicates that a majority of those surveyed support making it easier for the United States to return migrant youth from Central America who have surged across the U.S. border with Mexico this year.

Washington (CNN) - Most Americans say Russia is directly or indirectly responsible for the downing of a Malaysia Airlines jetliner over eastern Ukraine, and unfavorable opinions of Russia have surged, according to a new national poll.

A CNN/ORC International survey conducted Friday through Sunday also indicates that nearly nine in 10 say that Moscow and pro-Russian rebels that control the area where Flight 17 crashed last week will try to cover something up in any international investigation.

Washington (CNN) -- It's the biggest question surrounding this year's midterm elections: how many people will turn out to vote?

The answer is crucial, because a smaller, more typical midterm electorate should favor the Republican Party. That's because single women, and younger and minority voters, who are big supporters of Democrats in presidential election years, tend to cast ballots in smaller numbers in the midterms.

Facing numerous international challenges, including the new bloodshed in Iraq, the civil war in Syria, and the fighting in Ukraine, as well as the controversial swapping of five Taliban prisoners held at Guantanamo Bay for the release of a U.S. soldier held captive in Afghanistan, a new NBC News/Wall Street Journal poll indicates just 37% of Americans say they approve of how the President's handling foreign policy. That's an all time low in NBC News/Wall Street Journal polling.

Washington (CNN) - Most Democrats say they'd support Hillary Clinton if she wins their party's nomination, but a new national survey indicates only a minority are excited about that prospect.

The CNN/ORC International poll released Sunday also indicates the race for the GOP nomination remains a wide open contest with no obvious frontrunner among the potential Republican White House hopefuls.